Bed-spring.



W. LEWIS.

' BED SPRING.

APPLICATION FILED APR.25L1914.

1,1 1 1,076., Patented pt. 22, 1914.

flwrlvsssss: IN EN T01? flTTOR/VEM THE NORRIS PETERS CO., PHOTD-LITHQ,WASHINGTON, D. C.

UNITED STATES PATENT OFFICE.

WILLIAM LEWIS, 0F UTICA, NEW YORK.

BED-SPRING. f

Specification of Letters Patent. Original application filed December 24,1910, Serial No. 599,130. Divided and this application filed AprilPatented Sept. 22, 1914.

25, 1914. Serial No. 834,316.

To all whom it may concern:

Be it known that I, WILLIAM LEWIS, of

Utica, in the county of Oneida, in the State of New York, have inventednew and useful Improvements in Bed-Springs, of which the following,taken in connection with the accompanying drawings, is a full, clear,and exact description.

This invention relates to certain improvements in coil springs adaptedto be used for spring beds, sofas and similar upholstered articles ofthe class set forth in my end- .ing application Serial No. 599,130,filed December 24:, 1910, of which the present application is adivision.

The primary object is to build up certain portions of the bed as, forexample, the head by the use of the sectional coil springs arranged inrows or sets, the junctions of the sections of each row or set beingconnected by floating tie bars for the purpose of bracing the sectionsagainst relative lateral displacement or buckling, and at the same timedistributing the load which may be applied to the upper ends of theupper sections to a greater number of the underlying sections, therebyestablishing compensating resistance for varying loads and effecting amore uniform restoration of the springs to their normal positions whenthe load is removed.

Other objects and uses relating to specific parts of my invention willbe brought out in the following description.

The drawing is a longitudinal vertical section of the head end of a bed,showing my improved construction.

In carrying out the objects stated, I have a plurality of, in thisinstance two, sets or rows of triple deck spring coils A and other rowsor sets of double deck coil springs C in the body of thebed, the severalrows or sets and also those of each row or set being spaced equi-distantapart so that the sections of each spring are co-axial and the axes ofthe several springs are vertical and parallel.

Each of the coils A is preferably formed of a single piece of suitablespring wire, soiled to form three co-axial sections, one above theother, which for convenience of description may be termed an upper endsection 5, a lower end section -6 and an n rmediate se ti n 7 th andsee" tions being conical and reversely arranged to that their largerends are respectively at the top and at the bottom, while theintermediate section is of substantially the same diameter as theadjacent smaller ends of the end sections.

The lower end sections of the coils A and C are of substantially thesame vertical height, suflicient to give the desired resiliency, and aredisposed in substantially the same horizontal plane, the convolutions attheir smaller ends being preferably close to gether, while the remainingconvolutions are spaced some distance apart to afford the desired springaction.

The intermediate sections -7 of the coils A are preferably ofsubstantially the same vertical height as the lower sections -6 and theend convolutions thereof are also close together, while their centralportions are spaced apart to afford the necessary spring action. In likemanner, the convolutions on the lower ends of the sections 5 of thecoils A, and also of the coils C, are close together and their remainingportions spaced apart for the same purpose, the vertical height of theend row ofthe sections -5- being substantially the same as that of thesections -6- and -7, while the upper coils of the next adjacent innerrow are of slightly less vertical height to give the desired inclinationor pillow effeet to the upper surface of the head end of the bed spring.For a similar reason, the vertical height of the upper sections of thecoils C in the row nearest to the coils A are of greater vertical heightthan the intermediate sections of the coils A, but of less verticalheight than the combined height of the sections 5 and 7-, whlle theremaining upper sections of the coils C in the body of the bed may be ofapproximately the same height as that of the intermediate sections ofthe coils A so that their upper ends will lie in substantially the samehorizontal plane.

The closely coiled convolutions at the junctions of the upper andintermediate sections of the coils A of both sets are connected by bracebars 8, while those at the junctions of the intermediate sectlons wlththe lower sections of the same sets are connected by brace bars 9. Thejunctions of the upper and intermediate sections of each row areconnected by a brace bar 11, ,f w hile the junctions of the intermediateand lower coils of each row are connected by a brace bar 12, said bracebars being provided with raised oflsets -10- entering he openings in theadjacent ends of i the superposed sections to firmly secure saidsections to the brace bars and thereby hold the intermediate portions ofthe springs, against relative lateral movement or buc kling.

The brace bars 9 are extended between the meeting ends of the sectionsof the coils C at their junctions one with the other and are'providedwith additional raised portions 1.0 entering the openings in the adjacent portions of the coils C, thereby tying to each other and to thecoils A. The junca system of the junctions of said coils to thecorrespondingunctions of the sections -6 and -7 of'th'e coils A to bracethe sections of the coils C against lateral'movement relatively movementserve to distribute any load which maybe applied to any one of thesprings to several of the adjacent springs, thus relieving any onespring or set of springs from excessive strain and adapting the entiresystem'of' springs to a wider range of loads than would be possible ifthe springs were not'tied together by brace bars at the junctionsof thesections in the manner described. As a further means for preventingrelative displacement of the springs, the larger ends of the upper andlower coils are connected by flexible ties or chains -22,

By tying the ends of the adjacent sets of springs together by means ofthe tie members and brace bars -8-' and it is only necessary to userails 1L- under every other set of springs, while the cross bars 'f'12-may be limited in number to every third or fourth set of springs tobrace the lengthwise bars -9 against relative lateral movement, whichbars 9 will perform their respective functions in holding the springs Aand C against buckling or relative lateral movement.

Itwill be'observed that the brace bars -8-, 9, 11'" and 12 areinterposed between the convolutions at the junctions of'the coils whichthey intersect and are't herefore interlocked with said coils by meansof the raised portions 10 to prevent relative movement of the-coilsand-brace bars.

What I claim is:

1. The combination in a bed spring of three-section coils of similarmaterial throughout, the upper and lower sections of which are.cone-shaped and taper toward each other, the middle section of which iscylindrical in form and of smaller convolu tions, coils of twocone-shaped sections tapering toward each other, braces connecting thejunctions of the sections or the adjacent two-section coils, bracesconnecting similar junctions of the sections of threesection coilsandbraces connecting the junc-- tions of two-section coils to one of thejunctions of the adjacent three section coils.

2. In a spring bed, a set of three-section coils, a separate set oiftwo-section coils,

floating brace bars connecting corresponding junctions of the sectionsof'the firstnamed set, and additional brace bars connecting the junctionof two of the sections of the first named set with the junctions of thesections of the separate setf I 3. In a spring bed, aset of triple-decksprings, a separate set of two-deck springs, floating brace barsconnecting the lower decks of the springs of both sets, and aseparatebrace bar connecting the upper and intermediate decks of the first-namedset 4L In a spring'bed, a plurality of sets of triple-deck coil springs,separate sets" of double-deck coil springsythe'lower and upper sectionsof each deck being conical with their smaller ends adjacent, floatingbrace bars connecting the upper ends of the sections of thelo'wer decksof both sets,and a separate floating br bar connecting the lower ends ofthe upper deck sections of the first-named set, the middle deck sectionsof said first-named set being of relativelysrnall diameter and havingtheir opposite ends engaged with the adjacent'brace bars, a

5. In a spring bed,'ase.t of triple-deck coilshaving their upper decksections conical and their middle deck sections of relatively smallerdiameter than the larger ends of the conical section's, floating bracebars connecting the junctions of the upper and middle 'de'ck section'switheach other and separate floating brace bars connecting the junctionsof the lower and middle seetiens with each other.

In witness whereof I have hereunto set my hand this 22d day of April,1914;

L IAM LEWIS,

Washington, D. Q.

Me n th a e a -e e was

